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Highlights
Summary
This moisturizing leave-in provides instant results and continuous repair and protection from cortex to cuticle. No.5LEAVE-IN™ immediately seals split ends and promotes visibly healthier hair after one use. Go beyond hydration with OLAPLEX Bond Building Technology™ and High-Adhesion Sealing Complex.
Benefits
- Instantly hydrate, soften, and detangle
- Immediately seal split ends
- Continuously repair and protect
Research Results
- Revives hair health leaving it softer, hydrated, and healthier-looking
- 12x more moisture after one use*
- Up to 88% split-end sealing after one use*
- Reduces breakage by 81%*
- Heat protection up to 450°F/232°C
- Vegan. Color-safe.
- *As tested in a clinical facility using curly tresses.
Key Ingredients
- HIGH-ADHESION SEALING COMPLEX: Immediately and continuously mends split ends.
- HYDRAMINO REPLENISHING BLEND: Provides hydration, conditioning, detangling, and shine.
- FUTURE DAMAGE SHIELD: Helps repair and prevent damage from styling and heat up to 450°F.
- OLAPLEX BOND BUILDING TECHNOLOGY™: Re-links the disulfide bonds that give hair its strength and structure.
Item 2660572
- Apply 1-2 pumps to clean, damp hair. Add more as needed. 2. Follow with your preferred stylers. Fine Hair: Begin with 1 pump. Medium to Coarse Hair: Begin with 2 pumps.
Water/Aqua/Eau, Cetearyl Alcohol, Astrocaryum Murumuru Seed Butter, Propanediol, Behentrimonium Chloride, Glycerin, Cetyl Alcohol, Isoamyl Laurate, Squalane, Bis-Aminopropyl Diglycol Dimaleate, Brassicyl Valinate Esylate, Cetyl Esters, Pentylene Glycol, Phenethyl Benzoate, Brassica Campestris/Aleurites Fordi Oil Copolymer, Hydroxypropyl Guar Hydroxypropyltrimonium Chloride, Caprylic/Capric Triglyceride, Cetrimonium Chloride, Caesalpinia Spinosa Gum, Fructooligosaccharides, Beta Vulgaris (Beet) Root Extract, Sodium PCA, Hydroxypropyl Starch Phosphate, Guar Hydroxypropyltrimonium Chloride, Sodium Lactate, Hydrogenated Ethylhexyl Olivate, Calcium Gluconate, Argania Spinosa Kernel Oil, Caprylyl Glycol, Cocos Nucifera (Coconut) Oil, Panthenol, Arginine, Ethylhexylglycerin, Oryza Sativa (Rice) Bran Extract, Sodium Phytate, Aspartic Acid, Potassium Lactate, Ximenia Americana Seed Oil, PCA, Hydrogenated Olive Oil Unsaponifiables, Butylene Glycol, Lactic Acid, Raphanus Sativus (Radish) Seed Extract, Octyldodecyl Oleate, Octyldodecanol, Helianthus Annuus (Sunflower) Extract, Propylene Glycol, Glycine, Citric Acid, Alanine, Algin, Coco-Glucoside, Sorbitan Oleate, Serine, Tocopherol, Rosmarinus Officinalis (Rosemary) Leaf Extract, Valine, Carrageenan, Chitosan, Xanthan Gum, Isoleucine, Proline, Threonine, Histidine, Phenylalanine, Magnolia Officinalis Bark Extract, Betula Alba Bark Extract, Crambe Maritima Extract, Ulmus Fulva Bark Extract, Caesalpinia Spinosa Fruit Extract, Sodium Hyaluronate, Hydrolyzed Ceratonia Siliqua Seed Extract, Zea Mays (Corn) Starch, Helianthus Annuus (Sunflower) Sprout Extract, Polyquaternium-7, Sodium Hydroxide, Phenoxyethanol, Sodium Benzoate, Potassium Sorbate, Fragrance (Parfum), Hexyl Cinnamal, Limonene, Citral, Linalool, Citronellol.
Ingredients are subject to change. For the most current ingredient list, please consult the product packaging of the item you received
This brand is excluded from most Ulta Beauty coupons.
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Reviews
Review Snapshot
by PowerReviews
Ratings Distribution
Hair Type
Most Helpful Positive Review
I would buy this product again!
When it comes to hair care, finding the perfect product for wavy and curly hair can feel like discovering a rare gem. If you've been on the hunt for a leave-in conditioner that hydrates, smooths frizz, and leaves your curls looking and feeling their best, the Olaplex No. 5 Moisturize and Mend Leave-...
Most Helpful Critical Review
It's ok but there's better ones out there.
I had high hopes for this leave-in conditioner, especially with all the promises of multi-level repair, hydration, and split-end mending. And while it does deliver on a few things, I'm honestly left feeling a little underwhelmed for the price and hype. First, the good: It definitely made my hair fe...
426 results
Smooths nicely
The bottle is a nice size and the texture is not too heavy. It is creamy and has a pump applicator. It spreads nicely and the smell is not too strong. I use it after my shower with damp hair and it gets absorbed quickly. The product leaves my hair softer feeling and more shinier. This product was provided for promotional purposes in exchange for my honest review.
Love it
I've been using the Olaplex No.5 Leave-In™ Conditioner for a few weeks now, and let me just say—my hair is THRIVING. I have color-treated, curly hair that tends to be a little dramatic (read: dry, frizzy, and impossible), but this changed the game. It feels lightweight going on, but somehow still manages to deeply hydrate and smooth everything out without weighing it down. My curls feel soft, defined, and super shiny—like I actually got sleep and drink water regularly. And the smell? So good it's borderline disrespectful. I've tried a lot of leave-ins, but this one really lives up to the hype. It makes detangling easier, adds shine, and leaves my hair feeling like it just got back from a spa retreat. Consider me hooked.
New Favorite!
Hair Type Wavy Hair
I have recently decided to start taking care of my hair more and didn't know where to start when it came down to which products to try. Normally I use a hair mask in the shower but decided to not use one when using this leave in conditioner to see how well it works. As soon as I raked it through my hair my frizz immediately calmed down. My hair felt moisturized and hydrated after applying it on my ends. I was afraid I had applied too much but after brushing and styling my hair there was no residue feeling at all and my blowout looked amazing.


So hydrating!
Hair Type Wavy Hair
Using this Olaplex leave in conditioner along with the Olaplex shampoo and conditioner really makes for a great hair day!! I love the light scent and how it feels in my hair. I typically apply this leave in when my hair has that towel dried feel to it. This leave in has definitely started to revive my hair since I've been using it. My hair is a lot more fuller and hydrated since using this product. I am quite excited to see what my hair progress will look like after finishing up the entire bottle. It makes my hair so soft and shiny. It's frizz free for the most part… I give it 4 stars because I still have some frizz. I love that the leave in is for all hair types because that is such a major game changer. This product is suitable for me and I am sure it would be suitable for just about anyone else. This product was provided for promotional purposes in exchange for my honest review
Great leave in conditioner!
My name is Eleanor and I am a beauty lover who loves trying new hair care products. The Olaplex No. 5 Leave-In Moisturize & Mend Leave-In Conditioner is a wonderful option that leaves my hair feeling smooth, hydrated and protected. This product is a nice lightweight lotion cream that glides smoothly into my hair and leaves it feeling hydrated. After washing my hair, I loved putting this in as a final step before drying as it made my hair feel so much smoother and healthier afterwards. I enjoyed this product very much, and after drying my hair felt so much healthier. This product has bond repair technology as well as other stand out ingredients such as squalane, panthenol, and glycerin to help condition, add shine, and detangle my hair. My hair felt so much softer and more manageable after using this leave in conditioner. It also smells great! I would recommend this product for anyone with light to coarse thick hair that is looking for a bond repair leave in for added hydration, softness and shine that will help repair damage. This product was received in exchange for my honest review and opinions.
Questions
Q&A
Showing 5 out of 13 Questions
- Q
How long will 3.3 oz last
- Asked by jo
- Official Answer By Olaplex - Brand EngageOur 3.3 oz No.5L Leave-In Conditioner is designed to be used sparingly, starting with 1 pump for fine hair or 2 pumps for medium to coarse hair. How long the bottle lasts will vary based on your hair length, thickness, and frequency of use.Was this answer helpful to you
- Q
Is is good for short dry gray hair
- Asked by Gmom
- Official Answer By Olaplex - Brand EngageYes! Nº.5L can be used on all hair types and is a great option for adding hydration, softness, and manageability to dry hair.Was this answer helpful to you
- Q
Is it safe for colored hair?
- Asked by Michelle
- Official Answer By Olaplex - Brand EngageYes! No.5L is safe for color-treated hair and is designed to help hydrate, soften, and protect damaged or dry strands without stripping color.Was this answer helpful to you
- Q
Do you apply this from the roots or mid-length to ends?
- Asked by Abby
- Official Answer By Olaplex - Brand EngageApply to clean, damp hair, focusing on mid-lengths to ends. If needed, you can lightly apply to roots, but use sparingly to avoid weighing hair down.Was this answer helpful to you
- Q
Can this be used on colored hair? I have s vivid color. Thanks in advance just want to be using the correct products
- Asked by SavyGillis
- Official Answer By Olaplex - Brand EngageYes, this is safe for color-treated and vivid hair. It helps maintain hydration and supports stronger-looking, healthier hair without affecting your color.Was this answer helpful to you